Wally Joyner (born June 16, 1962 in Atlanta, Georgia) is a former first baseman in Major League Baseball. He attended college at Brigham Young University and played for five different major league teams in his career: the California Angels, Kansas City Royals, San Diego Padres, Atlanta Braves and Anaheim Angels. He now resides in Mapleton, Utah. Joyner has invested and appeared in movies marketed to members of The Church of Jesus Christ of Latter-day Saints (Mormon church), including playing "Brother Jensen" in the 2003 movie, "The R.M."

While playing for the California Angels, Wally earned the tag of "fan favorite", and briefly inspired a craze called "Wallyworld", a term describing the Anaheim park, drawn from references to Disneyland and the film National Lampoon's Vacation.

When Joyner's team, the California Angels, met the New York Yankees in a game in August 1986, a fan threw a knife at him. Joyner was grazed on the left arm by the butt end of the weapon, escaping injury. Said Joyner: "I picked it up and gave it to Gene Mauch."

Wally Joyner tied Darryl Strawberry for first place in the 1986 Home Run Derby, representing the California Angels.

In a November 2005 interview with ESPN The Magazine, Joyner admitted to using steroids given to him by the late Ken Caminiti while they were both with the 1998 Padres .